Presenting the all new mechanical Add-on MLC for Co-60 teletherapy

Upper Cut

The innovative concept of the CobraLeaf® MLC system now provides - for the first time in history - the ability to conform Cobalt-60 Radiotherapy to the exact tumor shape without the cumbersome use of lead blocks. The method, known as 3D CRT, improves the impact on the cancerous tissue while sparing the surrounding healthy tissue.

The CobraLeaf® connects modern treatment methods in radiotherapy with high cost-efficiency and maximum reliability for all environments, even in remote areas.

The CobraLeaf® MLC system is the newest development of Precisis AG in close cooperation with the German Cancer Research Center (DKFZ) and the support of Best Theratronics.

Focusing radiation efficiently on the tumor for improved cancer care will help saving lives – all over the world.


  • Instant usability (No installation measures)
  • Highest reliability (No electrical components, easy maintenance)
  • Minimal investment
  • No reliable power supply required.


DriveClosed-loop pneumatics Power independent Easy leaf retraction system
Field size20cm x 30cm *
Leaf width10mm *
FocusSingle focus + rounded leaf ends
Penumbra< 10mm **
Leakage< 2%
Mounting in Accessory tray *** 
Compact design65cm x 35cm x 12,5cm; 45kg
*At Isocenter for 80cm SAD
**Source Ø 20mm, 85cm SAD, depth 10cm, 10cmx10cm field at 100cm
***Tested for Theratron 80cm SAD, other adaptations on request